/Engine/Plugins/Online/OnlineSubsystemUtils/Source/OnlineSubsystemUtils/Public/PartyBeaconHost.h
Delegate called when the beacon gets any request, allowing the owner to validate players at a higher level (bans,etc)
typedef TBaseDelegate_OneParam< bool, const [TArray](API\Runtime\Core\Containers\TArray)< [FPlayerReservation](API\Plugins\OnlineSubsystemUtils\FPlayerReservation) > & > FOnValidatePlayers